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Old January 11, 2018   #15
maxjohnson
Tomatovillian™
 
Join Date: Oct 2015
Location: OH 6a
Posts: 592
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I have had success with 5 gallons, so my opinion is 10 gallon is more than adequate. For grow bags, a 10 gallon is going to seem more like 8 gallon in person, which is still enough.

If you order them, check the description for the dimension.
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